Question

3. If A and B are in the ratio 3: 4, and B and Cint
ratio 12:13, then A and C will be in the ratio
(1) 3:13
(2) 9: 13
(3) 36:13
(4) 13:9
J​

Answer 1

3) 9:13

A:B=3:4(eq1)

B:C=12:13(eq2)

Multiply equation 1 by 3,so that the ratio of B will same in both equations

1 x 3, A:B=9:12

B:C=12:13

A:C=9:13